Abstract
Superplastic behavior has been found in Ni–40Al intermetallics with large grains. The large-grained Ni–40Al alloy exhibited all deformation characteristics of conventional fine-grained superplastic alloys. Metallographic examination (OM) showed that the average grain size of large-grained Ni–40Al alloys decreased during superplastic deformation from 220 μm before deformation to 25 μm after deformation to fracture. Electron back-scattered diffraction (EBSD) and transmission electron microscopy (TEM) showed that there were a great number of sub-grain boundaries which formed a network and among which the proportion of low and high angle boundaries increased with the increase of strain. The observed superplastic phenomenon is explained by continuous recovery and recrystallization.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.